RK Hydroworks Inc.
RK Hydroworks Inc. is a small business in Santee, CA registered on SAM.gov to bid on federal contracts. Below are its registration details, certifications and federal contract history.
- UEI
- J9ZREKHDLNG3
- CAGE code
- 23C99
- SAM.gov registration
- Active
Registration details
| Legal business name | RK Hydroworks Inc. |
|---|---|
| Unique Entity ID (UEI) | J9ZREKHDLNG3 |
| CAGE code | 23C99 |
| Location | Santee, CA |
| SAM.gov registration | Active through Jul 24, 2027 |
| Business started | 2024 |
| Primary NAICS code | 221310: Water Supply and Irrigation Systems |
Federal contract history
USAspending.gov shows no federal prime contracts for this UEI in the last five years. Many small businesses start as subcontractors to larger firms; see how to become a government subcontractor.
NAICS codes RK Hydroworks Inc. is small under
On its SAM.gov registration, RK Hydroworks Inc. meets the SBA size standard for these industries, so it can bid on small business set-asides that use them.
- 221310 Water Supply and Irrigation Systems
Open contracts in RK Hydroworks Inc.'s NAICS codes
6 open federal opportunities on SAM.gov use a NAICS code RK Hydroworks Inc. is small under. These are due soonest.
- FA8601 - Industrial Water Treatment at Wright-Patterson AFB
Due in 2 daysOct 13, 2026
- FCC Yazoo City FY 2027 Water Treatment Services
✦ The Federal Bureau of Prisons at FCC Yazoo City, Mississippi wants a contractor to run a water treatment program for its chiller plants, powerhouse boilers and hot and chilled…
Due in 5 daysOct 16, 2026
- Water Treatment, Maintenance, & Monitoring Services - VA Black Hills Health Care System - Hot Springs VA Medical Center
Due in 5 daysOct 16, 2026
- WATER DE-IONIZATION SERVICE
Due in 5 daysOct 16, 2026
- Chlorination Systems and Maintenance - FWA
✦ The Army (Fort Wainwright, Alaska, Directorate of Public Works) wants a small business to inspect potable water storage tanks and maintain chlorination monitoring and injection…
Due in 11 daysOct 22, 2026
Similar small businesses
Other small businesses with the same primary NAICS code (221310) that have won federal contracts, starting with California:
- Watercourse Engineering, Inc., Davis, CA
- Sustainable Industries, San Diego, CA
- Ocean Pacific Technologies, Ventura, CA
- Hiuga Diving Co, Acampo, CA
- Superior Pump & Drilling, Inc, Fort Bragg, CA
- Calmin Inc, Santa Barbara, CA
Frequently asked questions
What is RK Hydroworks Inc.'s CAGE code?
RK Hydroworks Inc.'s CAGE code is 23C99. The Defense Logistics Agency assigns CAGE codes when a business registers on SAM.gov.
What is RK Hydroworks Inc.'s UEI?
RK Hydroworks Inc.'s Unique Entity ID (UEI) is J9ZREKHDLNG3. SAM.gov assigns the UEI, and it identifies the business across the federal government.
Is RK Hydroworks Inc.'s SAM.gov registration active?
Yes, as of the latest SAM.gov public data, RK Hydroworks Inc.'s registration is active through Jul 24, 2027. Registrations are renewed every year.
Is RK Hydroworks Inc. a small business?
RK Hydroworks Inc. is registered on SAM.gov as small under 1 NAICS code, including its primary code, 221310. Size is set per NAICS code, so a business can be small for some contracts and not others.
Keep going
- Look up another business's CAGE code or UEI
- Check a SAM.gov registration's status
- How to become a government subcontractor
Registration details come from SAM.gov's public entity extract and contract figures from USAspending.gov. Contact names and street addresses are left out. To change these details, update the registration on SAM.gov. To ask us to remove this page, email hello@fedready.us.